AMC7820

SBAS231B

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8

TYPICAL CHARACTERISTICS: ADC (Cont.)

At TA = +25°C, +AVDD, BVDD = +5.0V, VREF = Internal +2.5V, unless otherwise noted.

GAIN ERROR, OFFSET ERROR, INTERNAL V

REF

vs AV

DD SUPPLY VOLTAGE

(Unbuffered Channels)

Supply Voltge, AV

DD (V)

4.75

4.80

4.85 4.90

4.95 5.00 5.05

5.10

5.20

5.25

5.15

0.030

0.025

0.020

0.015

0.010

0.005

0.000

–0.005

–0.010

–0.015

–0.020

0.300

0.250

0.200

0.150

0.100

0.050

0.000

–0.050

–0.100

–0.150

–0.200

Offset

Internal V

REF

Gain

40

35

30

25

20

15

10

5

0

POWER-SUPPLY REJECTION vs FREQUENCY

AV

DD Ripple Frequency (Hz)

100

10k

100k

1M

1k

10

INTERNAL REFERENCE VOLTAGE

vs TEMPERATURE

Temperature (

°C)

10

5

0

–5

–10

–15

–20

–50

–25

0

25

50

75

100

INTERNAL 2.5V REFERENCE DISTRIBUTION

Internal Reference Voltage (V)

25

20

15

10

5

0